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BRAND CATX KVM EXTENDER FAMILY
34
Figure 12 Illustration of skew and appearance on test card
Some Cat5e/Cat6 cables require a large green delay. Video quality can
be often be vastly improved by using standard crossover patch cables at
both ends of the link rather than straight patch cables. For details see
Appendix D: Advanced Cabling Issues (Skew), page 55.
Sometimes the optimum skew adjustment will actually be one step out from that
suggested by the test card due to the way some monitors sample the signal.
The maximum amount of skew correction available is 42nS. This is more than
adequate for the vast majority of cables. However, it may not be enough if you
are using a particularly long run of a cable which exhibits severe delay skew.
7. If you are using one or more flat panel monitors in the Remote consoles, carry out
auto-adjustment as described in the monitor’s documentation. Sometimes manual
adjust of clock and/or phase is also required for optimum results and minimization
of jitter.
Red
Green
Blue
Slower
Faster
In this illustration, Blue is the
slowest signal. To optimize the
image, Red and Green need to
be delayed until they align with
Blue.